author James Teh <>
Wed, 01 Feb 2023 05:02:01 +0000
changeset 651150 dd0fdd1daa69783be36acd5c50544f3694eaa8f9
parent 451198 3511904f12cf4e71e3e2baaa20c1845b936b3cbe
permissions -rw-r--r--
Bug 1813980: Check IsDoc before Parent in RemoteAccessibleBase::ApplyCrossDocOffset. r=morgan We call this function on every ancestor when calculating bounds. RemoteParent() currently requires a hash lookup, so it's more efficient to early return for !IsDoc() first. This is a micro-optimisation, but it might have some impact given that we call this on every ancestor, especially when hit testing, where we call Bounds() a lot. As a bit of drive-by cleanup, use RemoteParent() rather than calling Parent() and IsRemote/AsRemote(). Differential Revision:

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<meta charset="utf-8">
<title>Reference: min-width|min-height:auto</title>
  <link rel="author" title="Mats Palmgren" href="">
  <style type="text/css">
body,html { color:black; background:white; font-family:monospace; font-size:16px; padding:0; margin:0; }

.grid {
  display: grid;
  width: 60px;
  grid-template-columns: 30px 30px;
  grid-auto-rows: 30px;
  align-items: start;
  justify-items: start;
  border: 3px solid blue;
span {
  border: 1px solid;
  background: lime;

<div class="grid">
  <span style="width:max-content">IAmReallyWideAndTheBorderShouldSurroundMe</span>

<pre>The border shouldn't shrink-wrap the wide text below, due to definite "width" values:</pre>
<div class="grid">
  <span style="width: 130%">IAmReallyWideButIHaveADefiniteWidthSoIOverflow</span>
  <span style="width: 50px">SameHereeeeeeeeeeeeeeeeeeeeeeeeeeee</span>
  <span style="width: 20px">SameHereeeeeeeeeeeeeeeeeeeeeeeeeeee</span><span></span>
  <span style="width: 20px; grid-column:span 2;">SameHereeeeeeeeeeeeeeeeeeeeeeeeeeee</span>

<pre>Now the same tests for 'height':</pre>

<div class="grid" style="margin-bottom:50px;">
  <span style="font-size:72px;width:max-content;height:max-content">IAmReallyTall</span>

The border shouldn't shrink-wrap the text vertically below, due to definite "height" values:
<div class="grid">
  <span style="font-size:72px; height:10%;width:max-content">IAmReallyTall</span>
  <span style="font-size:72px; height:10px;width:max-content">SameHere</span>
  <span style="font-size:72px; height:40px;width:max-content">SameHere</span>